Re: My Centipede volume is Buzzing/Humming
- From: "[80s.fan]" <80#LESS_SPAM#s.arcade@xxxxxxxxxxxx>
- Date: Tue, 29 Nov 2005 10:39:19 -0500
I had a Crystal Castles machine which had this. It turned out the be the
OpAmp chip on the PCB that was getting bad (believe it was the LM324 chip on
the sound output stages circuitry). It was causing a low pitched hum sound.
Not sure if this will help you perhaps.
Good luck.
"JENGA" <rob.jengehino@xxxxxxxxxxxxxxxxxxx> wrote in message
news:1133278372.707002.278780@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
>I have a centipede stand-up. Everything is working...BUT...when I turn
> the volume knob, the sound gets a bit louder (not much) and I can hear
> a buzzing/humming that gets louder as I turn the knob up. The game
> sounds are almost inaudible. All the chips on the board checked out ok.
> We replaced the caps in the power board. I am now out of ideas. Any
> ideas from you would be great! Thanks for your help.
>
> -Rob
>
.
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- From: JENGA
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